My 08 300 XC is leaking oil at the front countershaft. Not from the dust seal but through the splines on the countershaft. I was running a Renthal sprocket then talked to the dealer and he suggested running the stock sprocket since these are set to KTM tolerance on the back space. I replace the spacer an o-ring when I did this swap. It didn't leak until I rode it. I have replaced the spacer and o-ring twice now with no luck at stopping the drool and have run it for the last 60-70 miles like that but sooner or later I'm going to pay the price. I understand the purpose of the o-ring to seal the internal fluid from leaking from behind the countershaft bearing through the spline. The shaft should have 1-2 mm of smooth surface where the bearing resides and the o-ring would seal but I can not see a shiny surface the the o-ring would mate too.
Is my last resort splitting the case here? Or am I missing something really bonehead, I mean how difficult could this be?
Is my last resort splitting the case here? Or am I missing something really bonehead, I mean how difficult could this be?
